A good CEO friend used to tell me that no matter what is happening in your company, "wear a s#$& eating grin." I'd rather put it as putting on the cowl of leadership and stalwartness on every day. Startups are a roller coaster ride and if you as CEO are having a bad day; that really does rub off on your team. You could simply have a headache or there could really be something going on in the business that you don't like. It doesn't matter. Your attitude and persona positively (or negatively impacts) your company. I am not advocating that you walk the halls like some crazed cheerleader (perhaps the best example ever from Steve Ballmer). Consistently reporting operating results to the company (high-level goals, sales wins, etc), regular company meetings, and generally being available and open to feedback/questions are simple things that you can do to make sure that everyone knows that the ship is moving in the right direction.